What is the perimeter?

21.1 yd^2
22.0 yd
21.1 yd
22.0 yd^2

21.1 yd

Step-by-step explanation:

The picture above is a triangle and a triangle has 3 sides. The perimeter of the triangle is the sum of the length of the whole sides. The height of the triangle, represented by a dash thin line is just an arbitrary line to estimate the height of the triangle.  

side1 = 9 yard

side2 = 5 yard

side3 = 7.1 yard

The perimeter of the triangle is the sum of the sides of the triangle.

perimeter = side1 + side2 + side3  

perimeter = 9 + 5 + 7.1

perimeter = 21.1 yard

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.

there is no picture in order for this question to be answered